ETH Price: $3,134.00 (+1.89%)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

732,160 ( 0.017%)

Market

Price

$23.91 @ 0.007629 ETH (+5.79%)

Onchain Market Cap

$23,910,000,000.00

Circulating Supply Market Cap

$15,255,345,062.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
0 LINK

Value
$0.00
0x3387b82541ccbca4d1d6dc512bed88b9c8f75f20
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OVERVIEW

A blockchain-based middleware, acting as a bridge between cryptocurrency smart contracts, data feeds, APIs and traditional bank account payments.

Profitability / Loss

Since Initial Offer Price
:$0.11 21636.36% |ETH 0.0003846 1883.62%

Market

Volume (24H):$979,186,452.00
Market Capitalization:$15,255,345,062.00
Circulating Supply:638,099,970.00 LINK
Market Data Source: Coinmarketcap

ICO Information

ICO Start Date : Sep 19, 2017   
Total Cap : $32,000,000
ICO Price  : $0.11 | 0.0003846 ETH
Country : USA

# Exchange Pair Price  24H Volume % Volume
1
Binance
LINK-USDT$23.83
0.0076022 Eth
$126,933,545.00
5,461,165.970 LINK
21.2289%
2
Coinbase Exchange
LINK-USD$23.88
0.0076174 Eth
$63,671,052.00
2,666,515.270 LINK
10.3654%
3
Bybit
LINK-USDT$23.86
0.0076104 Eth
$51,874,813.00
2,239,240.409 LINK
8.7045%
4
OKX
LINK-USDT$23.88
0.0076181 Eth
$26,823,496.00
1,165,903.414 LINK
4.5322%
5
P2B
LINK-USDT$23.81
0.0075879 Eth
$21,885,776.00
919,369.970 LINK
3.5738%
6
DigiFinex
LINK-USDT$23.91
0.0076271 Eth
$17,900,258.00
748,669.020 LINK
2.9103%
7
Gate.io
LINK-USDT$23.89
0.0076201 Eth
$17,649,077.00
759,342.660 LINK
2.9518%
8
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$23.91
0.0076233 Eth
$17,628,064.00
754,505.276 0X514910771AF9CA656AF840DFF83E8264ECF986CA
2.9330%
9
MEXC
LINK-USDT$23.88
0.0076183 Eth
$14,220,957.00
595,440.970 LINK
2.3146%
10
HTX
LINK-USDT$23.84
0.0076044 Eth
$13,824,379.00
596,146.461 LINK
2.3174%
11
XT.COM
LINK-USDT$23.90
0.0076246 Eth
$12,595,895.00
541,911.380 LINK
2.1065%
12
Azbit
LINK-USDT$23.80
0.0075962 Eth
$12,369,109.00
532,044.914 LINK
2.0682%
13
Binance
LINK-FDUSD$23.91
0.0076139 Eth
$10,974,285.00
470,359.600 LINK
1.8284%
14
Kraken
LINK-USD$23.92
0.0076291 Eth
$10,972,998.00
458,823.319 LINK
1.7836%
15
Bitunix
LINK-USDT$23.94
0.0076312 Eth
$10,695,685.00
446,762.670 LINK
1.7367%
16
Binance
LINK-USDC$23.93
0.0076330 Eth
$10,462,842.00
447,718.600 LINK
1.7404%
17
Coinstore
LINK-USDT$23.83
0.0076071 Eth
$10,277,735.00
442,393.870 LINK
1.7197%
18
KuCoin
LINK-USDT$23.93
0.0076293 Eth
$9,978,152.00
417,054.008 LINK
1.6212%
19
CoinW
LINK-USDT$23.80
0.0075968 Eth
$8,541,619.00
358,953.780 LINK
1.3953%
20
BYDFi
LINK-USDT$24.01
0.0076340 Eth
$7,357,568.00
306,375.330 LINK
1.1910%
21
Coinbase Exchange
LINK-EUR$23.94
0.0076363 Eth
$7,296,624.00
304,786.370 LINK
1.1848%
22
BTSE
LINK-USDT$23.88
0.0076218 Eth
$6,464,352.00
270,706.381 LINK
1.0523%
23
LBank
LINK-USDT$23.78
0.0075690 Eth
$6,337,201.00
266,454.830 LINK
1.0358%
24
LATOKEN
LINK-USDT$23.95
0.0076406 Eth
$6,290,043.00
262,598.240 LINK
1.0208%
25
QMall
LINK-USDT$23.83
0.0076057 Eth
$5,222,295.00
224,310.145 LINK
0.8720%
26
WhiteBIT
LINK-USDT$24.00
0.0076528 Eth
$4,891,183.00
203,810.170 LINK
0.7923%
27
Bitvavo
LINK-EUR$23.82
0.0076047 Eth
$4,821,443.00
202,391.570 LINK
0.7867%
28
Dex-Trade
LINK-USDT$23.92
0.0076292 Eth
$3,856,591.00
161,243.690 LINK
0.6268%
29
FMCPAY
LINK-USDT$23.87
0.0076151 Eth
$3,708,657.00
159,796.236 LINK
0.6212%
30
Biconomy.com
LINK-USDT$23.93
0.0076281 Eth
$3,398,384.00
147,725.870 LINK
0.5742%
31
CoinEx
LINK-USDT$23.80
0.0075762 Eth
$2,765,556.00
119,288.774 LINK
0.4637%
32
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$23.70
0.0075576 Eth
$2,442,243.00
105,181.072 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.4089%
33
PointPay
LINK-USDT$23.98
0.0076357 Eth
$2,089,930.00
89,809.595 LINK
0.3491%
34
Coinbase Exchange
LINK-GBP$23.91
0.0076262 Eth
$1,946,549.00
81,417.550 LINK
0.3165%
35
WhiteBIT
LINK-TRY$23.94
0.0076350 Eth
$1,914,004.00
79,963.800 LINK
0.3108%
36
FMCPAY
LINK-ETH$23.94
0.0076330 Eth
$1,691,667.00
72,501.440 LINK
0.2818%
37
Phemex
LINK-USDT$23.82
0.0076056 Eth
$1,603,354.00
67,311.470 LINK
0.2617%
38
FMCPAY
LINK-BTC$23.92
0.0076247 Eth
$1,487,792.00
63,114.700 LINK
0.2453%
39
Kraken
LINK-EUR$23.89
0.0076206 Eth
$1,363,280.00
57,067.534 LINK
0.2218%
40
EarnBIT
LINK-USDT$23.96
0.0076412 Eth
$1,312,244.00
56,940.927 LINK
0.2213%
41
OKX
LINK-USDC$23.90
0.0076231 Eth
$1,236,005.00
53,488.395 LINK
0.2079%
42
Binance
LINK-TRY$23.92
0.0076304 Eth
$1,213,128.00
52,047.650 LINK
0.2023%
43
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$23.88
0.0076147 Eth
$1,174,720.00
97,220.712 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.3779%
44
EXMO
LINK-USDT$23.92
0.0076321 Eth
$1,173,686.00
49,058.516 LINK
0.1907%
45
tanX
LINK-USDC$23.94
0.0076330 Eth
$1,093,590.00
47,281.280 LINK
0.1838%
46
Bitbank
LINK-JPY$23.91
0.0076242 Eth
$1,074,414.00
44,937.942 LINK
0.1747%
47
WhiteBIT
LINK-BTC$23.97
0.0076447 Eth
$1,073,659.00
44,785.630 LINK
0.1741%
48
Binance
LINK-ETH$23.83
0.0076085 Eth
$1,029,569.00
44,264.970 LINK
0.1721%
49
Binance
LINK-EUR$23.79
0.0075962 Eth
$949,749.00
40,753.840 LINK
0.1584%
50
WhiteBIT
LINK-EUR$23.90
0.0076240 Eth
$947,171.00
39,627.990 LINK
0.1540%
51
PancakeSwap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$23.84
0.0076059 Eth
$931,879.00
39,854.238 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.1549%
52
BitStorage
LINK-USDT$23.88
0.0076165 Eth
$931,743.00
39,021.810 LINK
0.1517%
53
BigONE
LINK-USDT$23.90
0.0076011 Eth
$929,755.00
38,901.360 LINK
0.1512%
54
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$23.88
0.0076159 Eth
$861,089.00
37,153.120 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.1444%
55
Bybit
LINK-USDC$23.84
0.0076052 Eth
$848,662.00
36,770.899 LINK
0.1429%
56
Trubit
LINK-USDT$23.92
0.0076290 Eth
$846,643.00
36,524.570 LINK
0.1420%
57
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$23.93
0.0076313 Eth
$813,569.00
34,924.576 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1358%
58
Gemini
LINK-USD$23.92
0.0076299 Eth
$809,432.00
33,841.934 LINK
0.1316%
59
QMall
LINK-USDC$23.79
0.0075955 Eth
$807,709.00
34,532.077 LINK
0.1342%
60
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$23.79
0.0075873 Eth
$741,329.00
726,144.884 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
2.8227%
61
Coinbase Exchange
LINK-USDT$23.92
0.0076272 Eth
$732,020.00
30,604.478 LINK
0.1190%
62
itBit
LINK-USD$23.92
0.0076277 Eth
$587,712.00
24,569.915 LINK
0.0955%
63
LATOKEN
LINK-BTC$23.76
0.0075627 Eth
$554,850.00
23,348.741 LINK
0.0908%
64
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$23.92
0.0076286 Eth
$545,291.00
23,287.039 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0905%
65
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$23.93
0.0076321 Eth
$528,602.00
22,668.917 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0881%
66
ProBit Global
LINK-BTC$23.69
0.0075474 Eth
$520,493.00
21,969.086 LINK
0.0854%
67
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$23.69
0.0075556 Eth
$506,732.00
21,666.557 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0842%
68
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$23.88
0.0076176 Eth
$501,495.00
21,384.423 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0831%
69
Coinbase Exchange
LINK-BTC$23.94
0.0076327 Eth
$431,713.00
18,036.320 LINK
0.0701%
70
BitDelta
LINK-USDT$23.96
0.0076268 Eth
$332,069.00
14,312.000 LINK
0.0556%
71
HashKey Exchange
LINK-USD$23.69
0.0075443 Eth
$315,998.00
13,671.237 LINK
0.0531%
72
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$23.93
0.0076288 Eth
$296,925.00
12,783.123 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0497%
73
BitMart
LINK-BTC$23.93
0.0076286 Eth
$295,340.00
12,343.280 LINK
0.0480%
74
Coinbase Exchange
LINK-ETH$23.86
0.0076150 Eth
$295,016.00
12,365.460 LINK
0.0481%
75
GMO Japan
LINK-JPY$23.76
0.0075781 Eth
$289,420.00
12,182.500 LINK
0.0474%
76
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$23.85
0.0076034 Eth
$274,109.00
11,826.793 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0460%
77
ProBit Global
LINK-USDT$23.98
0.0076501 Eth
$260,219.00
10,850.005 LINK
0.0422%
78
bitcastle
LINK-USDT$23.92
0.0076278 Eth
$251,720.00
10,820.960 LINK
0.0421%
79
Bitso
LINK-USD$23.79
0.0075920 Eth
$240,569.00
10,113.820 LINK
0.0393%
80
Slex
LINK-ETH$23.95
0.0076357 Eth
$229,191.00
9,826.620 LINK
0.0382%
81
Hotcoin
LINK-BTC$23.95
0.0076088 Eth
$228,467.00
9,541.210 LINK
0.0371%
82
Bitci TR
LINK-TRY$23.89
0.0076254 Eth
$221,633.00
9,557.490 LINK
0.0372%
83
Kraken
LINK-USDC$24.05
0.0076706 Eth
$217,858.00
9,060.140 LINK
0.0352%
84
BitStorage
LINK-ETH$23.93
0.0076309 Eth
$212,325.00
8,872.810 LINK
0.0345%
85
KuCoin
LINK-USDC$23.97
0.0076433 Eth
$208,083.00
8,681.240 LINK
0.0337%
86
DeGate
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$23.77
0.0075762 Eth
$207,121.00
8,869.893 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0345%
87
PointPay
LINK-BTC$23.95
0.0076276 Eth
$205,221.00
8,709.384 LINK
0.0339%
88
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$23.70
0.0075557 Eth
$196,695.00
191,738.791 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.7453%
89
BYDFi
LINK-USDC$23.81
0.0076000 Eth
$188,169.00
7,904.230 LINK
0.0307%
90
Quickswap (v3)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$23.91
0.0076270 Eth
$172,161.00
167,653.606 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.6517%
91
Solidly V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$23.88
0.0076180 Eth
$162,233.00
6,944.688 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0270%
92
Mercado Bitcoin
LINK-BRL$23.69
0.0075522 Eth
$149,415.00
6,307.742 LINK
0.0245%
93
Kraken
LINK-GBP$23.89
0.0076220 Eth
$141,485.00
5,921.507 LINK
0.0230%
94
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$23.91
0.0076233 Eth
$139,708.00
11,535.981 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.0448%
95
Binance US
LINK-USDT$23.98
0.0076540 Eth
$130,641.00
5,447.830 LINK
0.0212%
96
Bitkub
LINK-THB$23.88
0.0076185 Eth
$130,449.00
5,461.843 LINK
0.0212%
97
Uniswap V3 (Avalanche)
0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7$24.11
0.0076859 Eth
$113,418.00
4,743.351 0X5947BB275C521040051D82396192181B413227A3
0.0184%
98
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$23.77
0.0075782 Eth
$109,188.00
4,651.685 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0181%
99
PancakeSwap (v2)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$23.92
0.0076295 Eth
$106,458.00
4,560.681 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0177%
100
KuCoin
LINK-BTC$23.89
0.0076187 Eth
$97,034.00
4,061.373 LINK
0.0158%

Contract Source Code Verified (Exact Match)

Contract Name:
LinkToken

Compiler Version
v0.4.16+commit.d7661dd9

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, Audited

Contract Source Code (Solidity)Audit Report

/**
 *Submitted for verification at Etherscan.io on 2017-09-23
*/

pragma solidity ^0.4.16;


/**
 * @title SafeMath
 * @dev Math operations with safety checks that throw on error
 */
library SafeMath {
  function mul(uint256 a, uint256 b) internal constant returns (uint256) {
    uint256 c = a * b;
    assert(a == 0 || c / a == b);
    return c;
  }

  function div(uint256 a, uint256 b) internal constant returns (uint256) {
    // assert(b > 0); // Solidity automatically throws when dividing by 0
    uint256 c = a / b;
    // assert(a == b * c + a % b); // There is no case in which this doesn't hold
    return c;
  }

  function sub(uint256 a, uint256 b) internal constant returns (uint256) {
    assert(b <= a);
    return a - b;
  }

  function add(uint256 a, uint256 b) internal constant returns (uint256) {
    uint256 c = a + b;
    assert(c >= a);
    return c;
  }
}


/**
 * @title ERC20Basic
 * @dev Simpler version of ERC20 interface
 * @dev see https://github.com/ethereum/EIPs/issues/179
 */
contract ERC20Basic {
  uint256 public totalSupply;
  function balanceOf(address who) constant returns (uint256);
  function transfer(address to, uint256 value) returns (bool);
  event Transfer(address indexed from, address indexed to, uint256 value);
}
/**
 * @title ERC20 interface
 * @dev see https://github.com/ethereum/EIPs/issues/20
 */
contract ERC20 is ERC20Basic {
  function allowance(address owner, address spender) constant returns (uint256);
  function transferFrom(address from, address to, uint256 value) returns (bool);
  function approve(address spender, uint256 value) returns (bool);
  event Approval(address indexed owner, address indexed spender, uint256 value);
}

contract ERC677 is ERC20 {
  function transferAndCall(address to, uint value, bytes data) returns (bool success);

  event Transfer(address indexed from, address indexed to, uint value, bytes data);
}

contract ERC677Receiver {
  function onTokenTransfer(address _sender, uint _value, bytes _data);
}

/**
 * @title Basic token
 * @dev Basic version of StandardToken, with no allowances. 
 */
contract BasicToken is ERC20Basic {
  using SafeMath for uint256;

  mapping(address => uint256) balances;

  /**
  * @dev transfer token for a specified address
  * @param _to The address to transfer to.
  * @param _value The amount to be transferred.
  */
  function transfer(address _to, uint256 _value) returns (bool) {
    balances[msg.sender] = balances[msg.sender].sub(_value);
    balances[_to] = balances[_to].add(_value);
    Transfer(msg.sender, _to, _value);
    return true;
  }

  /**
  * @dev Gets the balance of the specified address.
  * @param _owner The address to query the the balance of. 
  * @return An uint256 representing the amount owned by the passed address.
  */
  function balanceOf(address _owner) constant returns (uint256 balance) {
    return balances[_owner];
  }

}


/**
 * @title Standard ERC20 token
 *
 * @dev Implementation of the basic standard token.
 * @dev https://github.com/ethereum/EIPs/issues/20
 * @dev Based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
 */
contract StandardToken is ERC20, BasicToken {

  mapping (address => mapping (address => uint256)) allowed;


  /**
   * @dev Transfer tokens from one address to another
   * @param _from address The address which you want to send tokens from
   * @param _to address The address which you want to transfer to
   * @param _value uint256 the amount of tokens to be transferred
   */
  function transferFrom(address _from, address _to, uint256 _value) returns (bool) {
    var _allowance = allowed[_from][msg.sender];

    // Check is not needed because sub(_allowance, _value) will already throw if this condition is not met
    // require (_value <= _allowance);

    balances[_from] = balances[_from].sub(_value);
    balances[_to] = balances[_to].add(_value);
    allowed[_from][msg.sender] = _allowance.sub(_value);
    Transfer(_from, _to, _value);
    return true;
  }

  /**
   * @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
   * @param _spender The address which will spend the funds.
   * @param _value The amount of tokens to be spent.
   */
  function approve(address _spender, uint256 _value) returns (bool) {
    allowed[msg.sender][_spender] = _value;
    Approval(msg.sender, _spender, _value);
    return true;
  }

  /**
   * @dev Function to check the amount of tokens that an owner allowed to a spender.
   * @param _owner address The address which owns the funds.
   * @param _spender address The address which will spend the funds.
   * @return A uint256 specifying the amount of tokens still available for the spender.
   */
  function allowance(address _owner, address _spender) constant returns (uint256 remaining) {
    return allowed[_owner][_spender];
  }
  
    /*
   * approve should be called when allowed[_spender] == 0. To increment
   * allowed value is better to use this function to avoid 2 calls (and wait until 
   * the first transaction is mined)
   * From MonolithDAO Token.sol
   */
  function increaseApproval (address _spender, uint _addedValue) 
    returns (bool success) {
    allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue);
    Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
    return true;
  }

  function decreaseApproval (address _spender, uint _subtractedValue) 
    returns (bool success) {
    uint oldValue = allowed[msg.sender][_spender];
    if (_subtractedValue > oldValue) {
      allowed[msg.sender][_spender] = 0;
    } else {
      allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);
    }
    Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
    return true;
  }

}

contract ERC677Token is ERC677 {

  /**
  * @dev transfer token to a contract address with additional data if the recipient is a contact.
  * @param _to The address to transfer to.
  * @param _value The amount to be transferred.
  * @param _data The extra data to be passed to the receiving contract.
  */
  function transferAndCall(address _to, uint _value, bytes _data)
    public
    returns (bool success)
  {
    super.transfer(_to, _value);
    Transfer(msg.sender, _to, _value, _data);
    if (isContract(_to)) {
      contractFallback(_to, _value, _data);
    }
    return true;
  }


  // PRIVATE

  function contractFallback(address _to, uint _value, bytes _data)
    private
  {
    ERC677Receiver receiver = ERC677Receiver(_to);
    receiver.onTokenTransfer(msg.sender, _value, _data);
  }

  function isContract(address _addr)
    private
    returns (bool hasCode)
  {
    uint length;
    assembly { length := extcodesize(_addr) }
    return length > 0;
  }

}

contract LinkToken is StandardToken, ERC677Token {

  uint public constant totalSupply = 10**27;
  string public constant name = 'ChainLink Token';
  uint8 public constant decimals = 18;
  string public constant symbol = 'LINK';

  function LinkToken()
    public
  {
    balances[msg.sender] = totalSupply;
  }

  /**
  * @dev transfer token to a specified address with additional data if the recipient is a contract.
  * @param _to The address to transfer to.
  * @param _value The amount to be transferred.
  * @param _data The extra data to be passed to the receiving contract.
  */
  function transferAndCall(address _to, uint _value, bytes _data)
    public
    validRecipient(_to)
    returns (bool success)
  {
    return super.transferAndCall(_to, _value, _data);
  }

  /**
  * @dev transfer token to a specified address.
  * @param _to The address to transfer to.
  * @param _value The amount to be transferred.
  */
  function transfer(address _to, uint _value)
    public
    validRecipient(_to)
    returns (bool success)
  {
    return super.transfer(_to, _value);
  }

  /**
   * @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
   * @param _spender The address which will spend the funds.
   * @param _value The amount of tokens to be spent.
   */
  function approve(address _spender, uint256 _value)
    public
    validRecipient(_spender)
    returns (bool)
  {
    return super.approve(_spender,  _value);
  }

  /**
   * @dev Transfer tokens from one address to another
   * @param _from address The address which you want to send tokens from
   * @param _to address The address which you want to transfer to
   * @param _value uint256 the amount of tokens to be transferred
   */
  function transferFrom(address _from, address _to, uint256 _value)
    public
    validRecipient(_to)
    returns (bool)
  {
    return super.transferFrom(_from, _to, _value);
  }


  // MODIFIERS

  modifier validRecipient(address _recipient) {
    require(_recipient != address(0) && _recipient != address(this));
    _;
  }

}

Contract Security Audit

Contract ABI

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Deployed Bytecode

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Swarm Source

bzzr://c5f438ff94e5ddaf2058efa0019e246c636c37a622e04bb67827c7374acad8d6
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